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Type of publication: research article
Type of publication (PDB): Straipsnis Clarivate Analytics Web of Science / Article in Clarivate Analytics Web of Science (S1)
Field of Science: Biochemija / Biochemistry (N004)
Author(s): Kuliešienė, Neringa;Sakalauskaitė, Sandra;Tučkutė, Simona;Urbonavičius, Marius;Varnagiris, Šarūnas;Daugelavičius, Rimantas;Lelis, Martynas
Title: TiO2 application for the photocatalytical inactivation of S. enterica, E. coli and M. luteus bacteria mixtures
Is part of: Environmental and climate technologies. Riga : Riga technical university, 2020, Vol. 24, iss. 3
Extent: p. 418-429
Date: 2020
Keywords: Bacteria mixture;Disinfection;E. coli;M. luteus;Pathogens;Photocatalysis;S. enterica;TiO2
Abstract: Water contamination by various bacteria, viruses and other pathogens is a great threat to human health. Amongst other Advanced Oxidation Processes TiO2 photocatalysis is considered as one of the most efficient treatment for the polluted wastewater disinfection. Usually, the wastewater produced by higher risk objects, such as hospitals, implicates diverse contaminants, but efficiency of most of the Advanced Oxidation Processes is tested by using only single pathogens and information on inactivation of bacteria mixtures is still limited. In this study, photocatalytical inactivation of three commonly found bacterial pathogens (gram-positive (Micrococcus luteus) and gram-negative (Salmonella enterica, Escherichia coli)) was investigated. Efficiency of traditional photocatalytic disinfection process using single bacterial pathogens was compared to the one observed for their mixtures. The impact of photocatalytical process parameters and treatment time on bacteria disinfection efficiency was studied. Photocatalytic disinfection efficiency testing with bacteria mixtures revealed, that in the presence of TiO2 photocatalyst and UV irradiation tested gram-positive cells were inactivated slower than gram-negative cells. Another important finding was that an overall photocatalytic disinfection efficiency of bacteria mixtures is not a straight forward sum of inactivation rates of individually tested pathogens but has a strong relationship to the properties of their competitive growth
Affiliation(s): Biochemijos katedra
Fizikos katedra
Lietuvos energetikos institutas
Vytauto Didžiojo universitetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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